Electric clock.



No. 664,348. Patented Dec. I8, 1900. u. L. COLLINS.

ELECTRIC CLOCK.

(Application filed Nov 20, 1899,) (No Model.) 4 Sheets$heet l,

"m: NoRms PETERS co, PHOYO-LITHO. WASHINGTON, n. c.

No. 664,348. Patented Dec. I8, 1900. u. L. COLLINS.

ELECTRIC CLOCK.

(Application filed Nov. 20, 1899.)- (No Model.) 4 Sheets'8heet 2.

J7 rm W @2313; his g r/tozwu s v W @M n45 norms wzrsns cu. PHOTOLITHO. wasmumou. nv c No. 664,348. Patented Dec. l8, I900. U. L. COLLINS.

ELECTRIC CLOCK.

(Application filed Nov. 20, 1899.)

(No Model.) 4 SheatsSheet 3.

5kg. &. 231w. 1/ 18 7x4 \37 4 W 3511 his 61122001404 6 Patented Dec. l8, I900.

-u. L. COLLINS. [ELECTRIC CLOCK.

(Application filed. Nov. 20, 1899.)

4 Shaets-Sheat 4.

Nb Model.)

@NQZ. 9 aB .,14 M 5am&

Wine/Mam UNITED STATES PATENT EEICE.

ULYSSES L. COLLINS, OF ST. LOUIS, MISSOURI.

ELECTRIC CLOCK.

SPECIFICATION forming part Of Letters Patent No. 664,348, dated December 18, 1900.

Application filed N e be 20, 1899. Serial No. 737,581. (No I110(lGl..-

To all whom, it may concern:

Be it known that I, ULYssEs L. COLLINS, of the city of St. Louis, State of Missouri, have invented certain new and useful Improve ments in Electric Clocks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to electric clocks; and it consists of the novel construction, combination, and arrangement of .parts hereinafter shown, described, and claimed.

Figure l is a front elevation of the entire clock mechanism, the same being removed from its casing. Fig. 2 isa side elevation of the clock, said view being taken looking in the direction indicated by the arrow 2, Fig. 1. Fig. 3 is aside elevation of the clock mechanism, said figure being taken looking in the direction indicated by the arrow 3, 1. Fig. 4c is a front elevation of the magnet and armature that controls the striking mechanism of the clock. Fig. 5 is a front elevation of the magnet and armature that controls the winding mechanism of the clock. Fig. 6 is a view in perspective of an electrically-operated brake made use of in carrying out my invention. Fig. 7 is a view in perspective of one of a pair of circuit-breakers of which I make use in carrying out my invention. Fig. 8 is a View in perspective of a weighted bellcrank or lever made use of for retaining the armature of the Winding-magnet. Fig. 9 is a detail sectional view taken approximately on the line 9 9 of Fig. 2 and showing a portion of the striking mechanism in one position. Fig. 10 is a view analogous to Fig. 9 and showing-the position of said mechanism while in operation. Fig. 11 is a side elevation of a coiled-wire actuating-finger made use of in releasing-said parts of the striking mechanism. Fig. 12 is a vertical sectional view taken approximately on the line 12 12 of Fig. 10. Fig. 13 is a side elevation of a counterbalance-ari'n made use of in carrying out my invention.

Referring by numerals to the accompanying drawings, the clock-frame comprises the outer skeleton plate 1 and the rear plate 2, the same being framed together in any suitable manner, and said frame is fixed upon the base-board 3,which base-board is removably positioned in the clock-casing.

Rigidly secured to and held in position be neath the lower right-hand corner of the plates 1 and 2 of the clock-frame is a pair of magnet-coils 4, the same being connected in the usual manner, the cores of which coils extend upwardly between the plates 1 and 2, and horizontally arranged between the upper ends of said cores and journaled in the plates 1 and 2 is a shaft 5, upon the front end of which is fixed a collar provided with a projecting arm 6, and loosely mounted upon said shaft, just to the rear of the collar, is a disk 7, provided with a couple of forwardly-projecting pins on each side of the arm 6, and in the periphery of said disk 7 opposite from said pins is a section 8 of insulation. Arranged in such a position as that its free end bears directly upon the periphery of this disk 7 is a brush 9, the same being insulated from the clock-frame, to which connects one of the conductors 10 from the magnet-coils 4:, the

opposite conductor 11 of said coils being connected to a bar 12, that extends horizontally across the lower portion of the plate 1, which bar is insulated from the clock-frame.

Upon the shaft 5, just inside the plate 1, is fixed a laterally-projecting arm 13, the outer end of which is weighted, and fixed upon said shaft, just inside this arm 13 and between the upperends of the cores of the magnet-coils is an armature 14, in the top of the right-hand of which is formed a notch 15.

Loosely arranged upon the shaft 5, just to the rear of the armature 14:, is a gear-wheel 16, the same being provided on its front face With an annular rim 17, on the interior of which rim is formed a series of internal ratchet-teeth 13, and a gravity-pawl 19 is carried by the left-hand end of the rear side of the armature 1%, the point of which pawl normally engages said teeth 18.

Arranged to rotate in the clock-frame immediately above the shaft 5 is a shaft 20, upon which shaft is fixed a sleeve 21, with the rear end of which is formed integral a balance-wheel22, there being a series of gearteeth 23 formed integral with the periphery of said balance-wheel 22. Integral with the forward end of said sleeve 21 is a spring-casing 24, within which is arranged a coil-spring 25, the outer end thereof being fixed to said casing 24 and the inner end fixed to the hub of the gear-wheel 26, which is arranged to rotate upon the shaft 20. Loosely arranged on the sleeve 21, just to the rear of the spring casing 24, is the hub 27 of a bell-crank lever, the short vertical arm 28 of which extends downwardly and outwardly, and the point of said arm normally engagesin the notch 15 in the armature 14. The long arm 29 of this bellcrank extends horizontally between the plates 1 and 2, its outer end being provided with an adjustable weight 30. Carried by the sleeve 21, adjacent the hub 27, is a ratchet-wheel 30, and pivotally secured to the long arm 29 of the bell-crank is a spring-actuatedpaw 30, the point of which engages the teeth of said ratchet-wheel 30.

The gear-wheel 26 meshes with and drives the pinion 31, carried by a shaft 32, the same being rotatably arranged in the center of the frame,which shaft 32 carries the clock-hands, the hour-hand of course being arranged upon a sleeve which rotates differentially upon the shaft 32, this arrangement being carried out bya suitable train of gearing arranged between the plates 1 and 2 above said shaft 32. Coiled upon the rear end of the shaft 32 is a length of wire 33, which coil forms a sleeve upon said shaft 32, and the rear end of said c011 of wire is arranged to engage against a pin 34, fixed in the shaft 32. The opposite end of this coil of wire is bent outwardly a short distance from the coil, as indicated by 35, and the free end of said outwardly-bent portion is bent forwardly, as indicated by36,

at right angles to said portion 35.

Located in the left-hand portion of the clock-frame and arranged for rotation between the plates 1 and 2 is a shaft 37, upon the forward end of which shaft is fixed a collar carrying an arm 38, a counterpart of the arm 6, and loosely arranged upon the shaft 37, immediately to the rear of this arm 38, is a disk 39, having a section of insulation in its periphery, which disk is every way similar to the disk 7. Arranged to ride upon the periphery of this disk 39 is the free end of a brush 40, the same being insulated from the clock-frame and electrically connected to one of a pair of magnet-coils 41, the same being held in any suitable manner immediately be neath the lower left-hand corner of the clockframe. These coils 41 are connected in the usual manner, and the opposite coil from the one previously mentioned is electrically connected with the bar 12. The cores of the magnet-coils 41 extend upwardly to points on each side of the shaft 37, and fixed upon said shaft 37 and operating between the upper ends of said cores is an armature 42. Fixed to the rear side of this armature 42 in any suitable manner is a horizontally-arranged bar 43, the right-hand end of which lies just within the path of travel of the laterally-bent end 36 of the coil in wire 33, and

carried by the left-hand end of said bar 43 is a weight 44.

Loosely arranged upon the shaft 37, just in front of the armature 42, is a gear-wheel 45, the same being provided with sixty teeth, and projecting inwardly from the front face of said gear-wheel 45 are ten pins 46, the same being arranged at equal distances apart.

Loosely carried by the shaft 37, just inside the front plate 1, is a wheel 47, integral with the rear side of which is a rim 48, and extending from the peripheries of this wheel and rim toward the center thereof are twelve notches 49, the same corresponding to the twelve divisions of time registered by the clock, and said notches are arranged at unequal distances apart.

Formed in the periphery of the wheel 47 is a plurality of small teeth 50, there being one of said teeth between the first and second notch 49, two teeth between the second and third notches, three teeth between the third and fourth, and so on around the periphery of said wheel 47, there being one more tooth between each succeeding pair of notches until between the twelfth notch and the firstmentioned notch there are twelve teeth.

Journaled between the plates 1 and 2, immediately above the shaft 37, is a shaft. 51, on which is fixed a balance-wheel 52, and integral with the front hub of said wheel is a single tooth 53, which meshes with the teeth 50. Carried by the rear side of this balancewheel 52 is a lug 54, the same having a curved outer surface, and integral with the rear hub of this balance-wheel 52 is a pin gear-wheel 55, there being six pins therein, and said pins meshing with the gear-wheel 45.

A brake for the balance-wheel 52 comprises a bent bar 56, the same being journaled upon a shaft 57 in the upper left-hand corner of the clock-frame, the right-hand end of said bar being weighted and the lower left-hand end thereof being provided with a strap 57, of soft iron, which is normally positioned immediately above and to one side of the core of the left-hand magnet 41. The bodyof this bar 57 passes very close to the periphery of the balance-wheel 52, and an arm 58 is formed on or fixed to said bar 56, the outer end of which arm carries a brake-shoe 59, of leather or analogous material, which is positioned immediately over the periphery of said balance-wheel.

Journaled in the clock-frame near a point adjacent the center thereof is a shaft 60, from which shaft extends downwardly a wire rod 61, the lower end of which is bent upwardly, as indicated by 62, and the end of said upwardly-bent portion 62 lies directly within the path of travel of the laterally-bent end 36 of the wire coil Carried'by said shaft and projecting laterally therefrom is a wire rod 63, the outer end of which is bent downwardly, as indicated by 64, said downwardlybent end normally resting against the lug 54. A wire rod 65 extends laterally from the shaft 60, its outer end being bent downwardly, as indicated by 66, which downward projection is provided with a hook which engages beneath the end of the long arm 29 of thelever previouslydescribed. Afourthlaterally-projecting wire arm or rod 67 extends outwardly from the shaft in front of the balancewheel 52, the end of said wire rod 67 being turned downwardly and fashioned into a Wedge-point 68, which wedge-point is carried directly above the wheel 47, and said point being constructed to engage in the notches 4E9.

Formed on or fixed tothe rear side of the gear-wheel 45 is a rim 69, in which is formed a series of internal ratchet-teeth 70, and carried by the inside of the armature 42 is a spring-actuated pawl 71, the point of which engages in these ratchet-teeth.

Journaled in the lower left-hand corner of the clock-frame is a shaft 72, from which projects downwardly the wire rod 73, the lower end of which carries a hammer 7%, that is arranged to strike against a spring 75, that is held in any suitable manner to the base 3 at a point below the clock mechanism. Carried by this shaft 72 is an upwardly-projecting wire rod 76, which lies directly in the path of travel of the pins 46, carried by the wheel e5.

Carried by a shaft 77, that is journaled in the center of the lower portion of the clockframe, is a downwardly-pending wire rod 78, that carries on its lower end a hammer 79, the same being arranged to strike against a gong 80, carried by the base 3. Carried by the rear end of this shaft 77 is an upwardlyprojecting wire rod 81, the upper end of which is bent downwardly, as indicated by 82, said downwardly-bent end being in the path of travel of the laterally-bent end 36 of the wire coil 33. This shaft 77, carrying the wire rods 78 and 81, together with the gong 80, provides means for striking the half-hours, while the shaft 72, carrying the wire rods 73 and 76, together with the spring and hammer 74:, provides means for striking the hour.

The conductors 83 and 84, that lead from the battery or other suitable source of electric energy, are connected to the frame of the clock adjacent the lower left-hand corner thereof, one of said conductors being connected direct to the plate 1, the opposite conductor being connected to a binding-post upon the bar 12, which, as heretofore stated, is insulated from the clock-frame.

The operation of my improved clock is as follows: Whenever the clock is running, the free end of the brushes 9 and 40 occupy positions upon the blocks of insulation that are let into the peripheries of the disks 7 and 39. Consequently both the circuits to the magnets which control the winding and striking mechanisms are cut out or opened. When in this position, the armature 14- is in a horizontal position, as seen in Figs. 1 and 5,,and the weighted end of the arm 13 is elevated. The previous movement of the magnet that brought the armature 14- into a horizontal position caused a partial rotation of the rim 17, owing to the fact that the point of the pawl 19 engages in the ratchet-teeth 18, and during the upward movement of said pawl said rim, in which said ratchet-teeth are formed,- was moved in rotation ashort distance. The gear-wheel 16, formed integral with said rim 17, meshing with the gear-teeth 23 on the balance-wheel 22, imparts a slight rotary motion to the shaft 20 and parts fixed thereon,- and consequently the coilspring 25 will be wound to a certain degree, and the power thus stored in said coil-spring is utilized in running the clock, rotary motion being imparted by said spring to the gear-wheel 26 and from thence to the train of gearing and to the shaft 32, on which the clock-hands are located. The power thus stored in the coil-spring 25 retains the weighted end of the long arm 29 of the bell-crank in an elevated position, owing to the fact that the ratchet-wheel 30 carried by the sleeve 21, engages the point of the pawl 30, that is carried by said long arm 29, and while the bellcrank is in its position the point of the shorter arm 28 thereof engages in the notch 15 in the armature 1a and retains said armature in a horizontal position. When the power of the coil-spring 25 is diminished by the running of the clock to such a degree as that the weight 30 overcomes the power of said spring, the arm 29 will gravitate downwardly a very slight degree, and in so doing the point of the arm 28 will slip out of the notch 15, and the armature 14 will swing downwardly into an inclined position, owing to the weight on the end of the arm 13, and this movement necessarily slightly rotates the shaft 5, and the pawl 19, carried by said armature 14:, is lowered within the internal ratchet 18. At the same time the arm 6, carried by the shaft 5, will engage against one of the pins carried by the outer face of the disk 7, and said disk will be moved to such a position as that the free end of the brush 9 passes off from the block of insulation in said disk and into direct engagement with said disk, thus form ing an electrical contact. The current from the battery or other source of electric energy passes from the conductor 83 onto the bar 12, which is insulated from the clock-frame, from thence through the conductor 11 to the first magnet-coil 4:, from thence through the opposite magnet-coil 4, through the conductor 10 to the brush 9, from thence to-the disk 7 and shaft 5 into the frame of the clock, and from said frame out through the conductor 84. The instant the magnet is thus energized the armature 14 will be brought to a horizon tal position, and in so doing the pawl 19, carried by said armature, will cause a partial rotation of the rim 17, in which is formed the internal ratchet'teeth 18, and consequently the shaft 20 will be partially rotated, as hereinbefore described, and power will be stored in the coil-spring 25, and as soon as power is stored in said spring the bell-crank, com- ICC posed of the arms 28 and 29, will be repositioned and the point of the short arm 28 will be reengaged in the notch of the armature 14. Thus the clock is actuated continuously and automatically as long as the connections between said clock and the batteries are maintained. TVhile the clock is running the winding-circuit is open, and the instant the weight 30 on the end of the arm 29 overcomes the diminished power of the coil-spring 25 the circuit is reestablished to actuate the various parts, as described, to rewind the spring. This completes the operation of the winding mechanism, and the operation of the striking mechanism will now be described.

Assuming that the wedge-point 68 of the wire-rod 67 is positioned in the notch 49 between the space on the periphery of the wheel 47, having five teeth and the space having six teeth, the armature 42 normally occupies a horizontal position between the upper ends of the cores of the coils 41, and when so post tioned the point or free end of the brush lies directly upon the block of insulation in the periphery of the disk 39. Just previous to the operation of striking the rotation of the shaft 32, carrying the hands of the clock, brings the laterally-bent end 36 of the wire coil 33 around into engagement against the upturned end 62 of the downwardlypending rod 61, and as the striking-point of the clock is reached the upturned end 62 of the rod 61 is moved outwardly by said laterally-bent end 36, and in so doing the downwardly-tnrned end 64 of the rod will be elevated from against the end of the lug 54. At the same time the wedge-point 68 of the wire rod 67 will be elevated from the notch 49, in which it has been resting, and the instant the lower end of said wedge-point 68 moves out of said notch, which operation takes place at the exact time the clock is to strike, the weight 44 upon the end of the bar 43, which is fixed to the armature 42, will cause said armature to drop into the inclined position seen in Fig. 10, and when this movement takes place the pawls carried by said armature will engage in one of the notches 70, and the rim 69, together with the gear-wheel 45, integral with said rim, will be partially rotated and said gear -wheel 45, meshing with the pin gear-wheel 55, will cause the shaft 51 to rotate, and consequently the balance-wheel 52, integral with said pin gearwheel, will be rotated. As the gear-wheel rotates the pins 46, carried by the front face thereof, will engage against the upper end of the wire rod 76 and the shaft 72, carrying said wire rod, will be slightly rocked, as a result of which the wire rod 73, carrying the hammer 74, will be actuated and the hammer will in its return movement strike against the spring 75, which acts as a gong. Vith each rotation of the shaft 51, carrying the balancewheel 52, the single tooth 53, carried by the hub of said balance-wheel, will engage between the teeth of the gear-wheel 47, and

thus said wheel will be moved a distance of one tooth with each complete rotation of said shaft 51, and during this movement the point of the wedge end 68 will ride along the periphery of the rim 48. During the rotation of the balance-wheel 52 the lug 54, carried thereby, will escape contact with the downwardly-bent end. 64 of the wire rod 63 until the wedge-point 68 engages in the succeeding notch 49. After the armature 42 has dropped to its inclined position the shaft 37, carrying said armature, will cause the disk 39 to partially rotate and the free end of the brush 40 will ride off from the block of insulation carried by said disk onto the periphery of said disk, and this movement closes the circuit through the magnet comprising the coils 41 and the cores thereof. The circuit being thus established and the magnet energized, the armature 42 will be instantly drawn into a horizontal position, as seen in Fig. 4, and as said armature assumes a horizontal position the block of insulation carried by the disk 39 will again be positioned beneath the point of the brush 40 and the circuit will be broken. The weight 44 will again cause the armature 42 to drop and the pawl 71, carried by said arma ture, will reengage in the next succeeding one of the notches 70 and the rotation of the shaft5 1 will be accomplished in the manner heretofore described and the hammer 74 will strike the second time against the springgong 75. This striking operation is repeated the same number of times as there are teeth 50 in the space on the periphery of the wheel 47 adjacent the notch 49 in said wheel, wherein the wedge-point (58 previously engaged. Where the wedgepoint (58 is moved along the periphery of the rim 48 between the notches corresponding to five and six, said wedgepoint will drop into the notch corresponding to six oclock at the completion of the sixth stroke of the hammer 74 upon the spring-gong 75, and when said wedge-point drops into said notch the down wardly-bent end 64 of the wire rod 63 will pass into the path of travel of the lug 54 and said lug will engage against said downwardly-bent end 64 at the completion of the sixth rotation of the balance-Wheel 52, and the striking mechanism will thus be held in a locked position until the wedge-point 68 is withdrawn from its notch at the completion of the succeeding hour. There being six pins carried by. the pin gear-wheel and sixty teeth in the gear-wheel 45, it will be seen that said gear-wheel is moved one-tenth of a rotation with each rotation of the pin gear-wheel 55. It necessarily follows that there must be one-sixth as many pins upon the face of the gear-wheel 45 as there are teeth in said gearwheel, and with each complete rotation of the shaft 51 one of said pins will engage against the upper end of the wire rod 76 and the springgong 75 will be struck. There are the same number of ratchet-teeth 70 as there are pins 46, and the armature 42 is so arranged that IIO each complete stroke of said armature causes the pawl 71 to engage one of said teeth and move the rim and gear-wheel the distance of one tooth. The balance-wheel 52 in its rotation gains considerable momentum, and in order to stop said balance-wheel at the proper instant and to do away with this momentum I have devised the electric brake seen in Fig. 6. This balance-wheel 52 completes each rotation just as the circuit in the coils ll is established, and as the magnet is energized the magnetic current in the upper end of the lefthand one of the cores of said magnet will attract the plate 5'7, and in so doing the bar 56 is drawn downwardly a slight distance and the leather brake-shoe 59 will engage directly upon the periphery of said balance-wheel 52, thus stopping it instantly and at the desired point. As soon as the circuit is broken the bar 56 reassumes its normal position and the brake-shoe 59 is released from the periphery of said balance-wheel.

In order to prevent the winding mechanism from operating while the clock is striking, I have positioned the wire rod on the shaft 60, the downwardly-bent end 66 thereof engaging beneath'the outer end of the long arm 29 of the bell-crank, thus retaining said long arm in an elevated position while the striking mechanism is in operation, which engagement necessarily retains the point of the short arm 28 in the notch 15. After the laterally-bent end 36 of the wire coil 33 has passed off from the upturned end 62 of the wire rod 61 it would be in the way of said upwardly-turned end 62 during its return movement or when the wedge-point 68 drops into the succeeding one of the notches 49, and to cause said laterally-bent end 36 to pass out of the way of the return movement of said upwardly-bent end 62 I have extended the bar 43 a distance toward the shaft 32 and arranged said coil 33 to move a short distance in one direction upon said shaft 32, and when the extended end of the bar 43 makes its first movement as a result of the dropping of the armature 42 said projecting end will engage against the laterally-bent end 36 of the wire coil 33 and move the same upwardly, as clearly seen in Fig. 10, thus causing said laterally-bent end 36 to clear the path of travel of the upwardly-bent end 62 of the wire rod 61 when said wire rod returns to its normal position. The half-hour is struck upon the gong 80 by the engagement of the laterally-bent end 36 of the wire coil 33 with the downwardly-bent end 82 of the wire rod 81, this movement slightly rocking the shaft 77 and causing the wire rod 78, carried thereby, to swing laterally a slight distance, and with the return swing of said wire rod the hammer 7 9, carried by the lower end thereof, will strike against the gong 80.

A clock of my improved construction is en tirely automatic in all its workings. There is no current in the magnets of said clock except when said clock is being wound and striking, and said clock possesses superior advantages in point of simplicity, durability, and general efficiency.

I claim 1. In an electric clock, a magnet, a shaft between the cores of said magnet, an armature carried by said shaft, an internal ratchetwhcel mounted upon said shaft, a gear-wheel rigid with said ratchet-wheel, means carried by said armature for operating the said ratchet-wheel, a spring, and means whereby said spring is wound when the said ratchetwheel is operated, substantially as specified.

2. In an electric clock, a magnet, a shaft between the cores of said magnet, a ratchet- .wheel upon said shaft, an armature car ried upon said shaft, means for rotating the ratchet-wheel when the said armature is operated,a gear-wheel integral with said ratchet,

spring, means for winding the spring when the armature is operated, a circuit from a suitable source of electrical energy, and

means whereby the said circuit is closed whenever the said spring is unwound, substantially as specified.

3. In an electric clock, a spring, mechanism for winding said spring, a magnet, an armature pivoted between the cores of said magnet, a ratchet connection between the said armature and the spring-winding mechanism, means for operating the winding mechanism at each operation of the armature, a circuit from the magnet to a suitable source of electrical energy, and means whereby the circuit is closed whenever the spring is unwound, substantially as specified.

4. In an electric clock, a spring, mechanism for winding said spring, a magnet, a shaft arranged between the extended cores of the magnet, an armature carried by said shaft, a gear-wheel loose upon said shaft and mesh ingwith the spring-winding mechanism, a rim integral with said gear-wheel, in which rim is formed an internal ratchet, and a gravitypawl carried by the armature for engaging the internal ratchet-teeth, substantially as specified.

5. In an electric clock, a spring, mechanism for winding said spring, a shaft, a gearwheel loosely mounted upon said shaft, a rim integral with said gear wheel in which rim is formed a series of internal ratchet-teeth, an armature fixed upon the shaft, a gravity-pawl carried by said armature, the point of which pawl engages the internal ratchet-teeth, a magnet, between the cores of which the armature operates, a circuit from said magnet toasuitable source of electrical energy,which circuit is normally open, and means whereby said circuit is established whenever the spring is unwound, substantially as specified.

6. In an electric clock, a striking mechanism, a magnet for actuating said striking mechanism, a circuit from said magnet to a suitable source of electrical energy, which circuit is normally open, means whereby said circuit is closed each time the striking mechanism is actuated, and means in said striking mechanism whereby the circuit to the magnet is closed to cause said striking mechanism to operate, substantially as specified.

7. In an electric clock, a striking mechanism, a magnet, a circuit from said magnet to a suitable source of electrical energy, which circuit isnormally open, a shaft passing between the extended cores of the magnet, an armature fixed upon said shaft, a disk carried by said shaft, means for rotating said disk each time the armature is actuated, and means whereby the current energizing the magnet is closed at each rotation of the disk, substantially as specified.

8. In an electric clock, a striking mechanism, a magnet for actuating said striking mechanism, a circuit from said magnet to a suitable source of electrical energy, which circuit is normally open, means whereby said circuit is closed each time the striking mechanism is actuated, a balancewheel in said striking mechanism, a pivoted arm passing over the periphery of said balance-wheel, the free end of which arm is adjacent one of the magnetcores, and a brake-shoe carried by said pivoted arm, which brake-shoe is intended to engage the periphery of said balancewheel whenever the magnet is energized, substantially as specified.

9. In an electric clock, a striking mechanism, a magnet for actuating said striking mechanism, a circuit from said magnet to a suitable source of electrical energy, which circuit is normally open, means whereby said circuit is closed each time the striking mechanism is actuated,a balance-wheel in the striking mechanism which completes a rotation with each actuation of the striking mechanism, a brake for said balance-wheel, which brake is operated by the current from one of the cores of the magnet, and means in said striking mechanism for automatically closing the circuit to start the striking mechanism,Which current also automatically renders said striking mechanism inoperative when the proper number of strokes have been made, substantially as specified.

10. In an electric clock, a spring,mecl1anism for winding said spring, a magnet, a circuit from said magnet to a suitable source of electrical energy, a striking mechanism, a magnet controlling said striking mechanism, a circuit from said magnet to a source of electrical energy, and means whereby the circuit to the winding-magnet is cut out when the circuit to the striking mechanism is closed, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

ULYSSES L. COLLINS.

Witnesses:

ALFRED A. EIcKs, MAUDE GRIFFIN. 

